Antique & Scientific Instruments U.K.







 Description: tnstnacs4

A comprehensive antique surveying theodolite by Troughton & Simms, London (1824 – 1916), instrument makers to the world. This six inch circle theodolite is engraved on the body plate TRAUGHTON & SIMMS LONDON, comes with a complete set of accessories in its fitted case. Accessories include erecting eyepiece, inverting eyepiece, plumb bob, sun filter, adjusting bar, trough compass, large detachable cross level and triangulation foot, as well as a complete working oil lamp for illuminating the cross hairs in the dark. The telescope has thumbwheel rack & pinion focussing, drawtube focussing eyepiece and removable ray shade to the objective. The vertical circle has 2 verniers with silvered scales and magnifiers, fine adjust and a lever clamp. The enclosed horizontal silvered scale also has 2 verniers with silvered scales and magnifiers, fine adjust and clamp, and there are two horizontal bubble levels on the plate. The instrument is mounted on a four-screw tripod mount with fine adjustments & clamp. This theodolite is in fine working order with all bubbles complete, controls smooth and all original finishes showing a few signs of wear, in itís hand made mahogany case with brass catches & hinges. An excellent and comprehensive example of a late 19th century transit theodolite by Traughton & Simms. - £595








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